Apparatus for upright boilers



(No Model.)

G. EIOHERT.

Apparatus for Upright Boilers.

No. 241,847. Patented May 24, I881.

o/Zfew t /32 pen for N, PETERS, Pholo-Lflhognphor, Wad-1115mm D4 C.

UNITED STATES PATENT OFFICE.

GEORGE EIGHERT, OF CINCINNATI, OHIO.

APPARATUS FOR UPRIGHT BOILERS.

SPECIFICATION forming part of Letters Patent No. 241,847, dated May 24,1881.

' Application filed January 25, 1881. (No model.)

To all whom it may concern:

Be it known that I, GEORGE EICHERT, a resident of the city of -Clincinnati, in the'county of Hamilton and State of Ohio, have inventedcertain new and useful Improvements in Apparatus for Upright Boilers, ofwhich the following is a specification.

A great many disastrous accidents occur from the explosion of thewater-backs and circulation-pipes, and the blowing oii'of' couplin gsused in apparatus of boilers for heating water for house use. Theseexplosions are mainly caused as follows: Ice is often formed in thepipes connecting the boiler and the heatingpipes in the stove or range,and often in said latter pipes after the fire in the said stove or rangeis allowed to go out. After a fire is again kindled in the stove steamis generated in the heating-pipes in the stove, and being preventedfrompassing out into the boiler by the ice before referred to, finally, asthe pressure of steam is increased, bursts the pipes, 850., frequentlyblowing out the top and side of the stove, causing other damage andfrequently great loss of life.

The object of my invention is to provide a valve which will permit of aperfect drainage of the pipes, so that no water is allowed to stand orfreeze in said pipes, and thereby all danger is obviated.

The nature of my'invention will be apparen from the followingdescription:

Referring to the drawings forming part of this specification, Figure 1represents a portion of a stove or range and the upright boiler, andshows the pipes connecting them, said pipes being provided with thevalves forming the principal feature of myinvention. Fig. 2 is a centralsection through one of the valves constructed according to my invention.

, A represents the upright boiler, of ordinary construction; and A thestove or range, to which the boiler is connected by means of pipes BB'.- These pipes are coiled or otherwise ar ranged within the stove orrange in any suit able manner, in order that the fire coming in contactwith them'willheatthe Water contained within them, and produce aconsequent circulation of fluids in said pipes and in the boiler A. Theboiler A is provided with the ordinary supply or feed pipe to andoutlet-pipe a,

some point, to prevent leakage.

through which latter the hot water is conveyed to various parts of thebuilding. Each of the pipes B B is provided with an angular box orvalve-cage, O, the particular construction of which is shown in Fig. 2.

b is the main body of the valve-cage, the inner end, I), of which, whenthe pipes are properly connected to the boiler A, extends some distanceinto the interior of the boiler, as shown in dotted lines in Fig. 1. Theobject of thus extending the end 1) into the interior of the boiler isto carry the valve well into the boiler, in order that it may beconstantlyimmersed in the hot water therein contained, and thus preventthe freezing of the valve in extreme cold weather. The particular formof valve may be varied to suit the manufacturer; but the preferred formis that herein shownviz, a button, d, fitting into a valve-seat in theend of the portion 1), as shown in Fig. 2. This button is connected to arod, d, which passes through the valve-cage b, and to the outer end ofwhich a small wheel, D', is connected. The rod 01 near the wheel D has ascrew-thread, 01 which engages a threadin the nut D, which latter isscrewed onto the body I). A suitable packing, as E, is placed around therod d at I When the wheel D is turned the thread d and nut D,

' through the medium of the rod 01, causes the button cl to fit tightlyinto the valve-seat or to be moved away from it, which movement governsthe flow of the water through the valve. The main body bis provided witha branch, F, to which one of the pipes B B is connected.

To one side of the bodyb is connected a vent, preferably automatic, andpreferably of the form hereinafter described. As shown, this ventconsists of a short tube, 6, which is screwed into the body b, the innerend of which tube is controlled by a valve, 0. This valve 6 is connectedto a rod, f, which passes through the tube 6, and is provided at itsouter end with a button, 6 A spiral spring, f, surrounds the rod f, andis compressed between the button 6 and the outer end of the tube 0, thustending to keep the valve e against the inner end of the tube 0.

The vent G is preferably surrounded by a guard-tube, H, to protect it,and this guardtube is provided with numerous small holes, g,

for the more ready admission of air to the vent. The way in which myinvention operates to permit a drainage of the pipes is as follows:

When it is desired to let the fire in the stove go out. the water mustbe removed from the pipes BB. To accomplish this the valve d must beclosed to shut ofl' communication with the interior of the boiler. Afterthese valves (1 have been closed the exhaust-cock J, which is placed atthe lowest point of the pipe B, is opened. It is now that the advantagesof my invention are made most manifest. Were it not for the latter thepipes could not be thoroughly emptied, for the reason that they would beclosed at one end, and after a certain amount of water had beenwithdrawn avacuum would be formed, and thus a portion of the water wouldbe retained in the pipes. My invention admits of the complete withdrawalof the water by permitting air to enter the pipes, for as soon assufficient water has escaped through the cock J to cause a vacuum to beformed the suction will draw the valve 0 (which is held against the tube6 by the springf) away from the end of the tube 0, and air will enterthe pipes B B, and a perfect vacuum cannot therefore be formed, and thewater will thus all be permitted to escape from the pipes, and thus theobjects at which my invention aims will be accomplished. As aprecautionary measure,

the valve (1 and cook J should be opened before the fire is started inthe stove, to be sure that the pipes are open, which will be mademanifest by water escaping from the cock J.

What I claim as new and of my invention, and desire to secure by LettersPatent, is-

1. The combination of the pipes B B, connecting the boiler and stove,and the exhaustcock J, and the valve-boxes, each provided with acut-ofl' valve and a vent, substantially as and for the purposesspecified.

2. The combination of the pipes B B, connecting the boiler and stove,and the exhaust cock J, and the valve-boxes, each provided with acut-off valve and an automatic vent, substantially as and tor thepurposes specified.

3. The combination of the pipes B B, connecting the boiler A and stoveA, and the exhaust-cock J, and the valve boxes or cages U, the latterbeing provided with the automatic vents Gr, substantially as and for thepurposes specified.

4. The combination of the boiler A and the valve-cage O, the latterbeing provided with automat c vent (Jr, and with the portion 11extending within the boiler, and the pipe B, substantially as and forthe purposes specified.

5. The combination of the val vc'cage 0, provided with automatic vent G,and the nut D, rod 4, and valve d, substantial y as and for the purposesspecified.

6. The combination of the vent G and guard II, the latter being providedwith holes g, substantially as and for the purposes specified,

GEORGE EIGHER'I.

Witnesses A. S. LUDLow, E. It. HILL.

